Protagonist Therapeutics Inc (PTGX)
Protagonist Therapeutics, Inc., a clinical-stage biopharmaceutical company, discovers and develops peptide-based therapeutic drugs to address unmet medical needs. The company is headquartered in Newark, California.
Stock Price Trends
Stock price trends estimated using linear regression.
Key facts
- The primary trend is increasing.
- The growth rate of the primary trend is 84.20% per annum.
- PTGX price at the close of July 11, 2025 was $53.00 and was inside the primary price channel.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 23.67% per annum.
- PTGX price at the close of July 11, 2025 was inside the secondary price channel.
Linear Regression Model
Model equation:
Yi = α + β × Xi + εi
Top border of price channel:
Exp(Yi) = Exp(a + b × Xi + 2 × s)
Bottom border of price channel:
Exp(Yi) = Exp(a + b × Xi – 2 × s)
where:
i - observation number
Yi - natural logarithm of PTGX price
Xi - time index, 1 day interval
σ - standard deviation of εi
a - estimator of α
b - estimator of β
s - estimator of σ
Exp() - calculates the exponent of e
Primary Trend
Start date: April 26, 2022
End date: July 11, 2025
a = 1.0362
b = 0.0017
s = 0.2206
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0017) – 1
= 84.20%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.2206) – 1
= 141.63%
April 26, 2022 calculations
Top border of price channel:
Exp(Y451)
= Exp(a + b × X451 + 2 × s)
= Exp(a + b × 652 + 2 × s)
= Exp(1.0362 + 0.0017 × 652 + 2 × 0.2206)
= Exp(2.5685)
= $13.05
Bottom border of price channel:
Exp(Y451)
= Exp(a + b × X451 – 2 × s)
= Exp(a + b × 652 – 2 × s)
= Exp(1.0362 + 0.0017 × 652 – 2 × 0.2206)
= Exp(1.6862)
= $5.40
July 11, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(1.0362 + 0.0017 × 1,824 + 2 × 0.2206)
= Exp(4.5299)
= $92.75
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(1.0362 + 0.0017 × 1,824 – 2 × 0.2206)
= Exp(3.6476)
= $38.38
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 84.20% per annum.
- PTGX price at the close of July 11, 2025 was $53.00 and was inside the primary price channel.
Secondary Trend
Start date: July 11, 2024
End date: July 11, 2025
a = 2.8208
b = 0.0006
s = 0.1072
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0006) – 1
= 23.67%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1072) – 1
= 53.56%
July 11, 2024 calculations
Top border of price channel:
Exp(Y1,005)
= Exp(a + b × X1,005 + 2 × s)
= Exp(a + b × 1,459 + 2 × s)
= Exp(2.8208 + 0.0006 × 1,459 + 2 × 0.1072)
= Exp(3.8844)
= $48.64
Bottom border of price channel:
Exp(Y1,005)
= Exp(a + b × X1,005 – 2 × s)
= Exp(a + b × 1,459 – 2 × s)
= Exp(2.8208 + 0.0006 × 1,459 – 2 × 0.1072)
= Exp(3.4555)
= $31.67
July 11, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(2.8208 + 0.0006 × 1,824 + 2 × 0.1072)
= Exp(4.0968)
= $60.15
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(2.8208 + 0.0006 × 1,824 – 2 × 0.1072)
= Exp(3.6679)
= $39.17
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 23.67% per annum.
- PTGX price at the close of July 11, 2025 was inside the secondary price channel.